/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package servlet;

import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Queue;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import model.Command;
import model.CommandRunner;

/**
 *
 * @author think
 */
@Singleton
public class GetQueuedTSServlet extends HttpServlet {
    private CommandRunner commandRunner;

    @Inject
    public GetQueuedTSServlet(CommandRunner runner){
        this.commandRunner = runner;
    }
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet GetQueuedTSServlet</title>");  
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet GetQueuedTSServlet at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
            */
        } finally { 
            out.close();
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet 方法。单击左侧的 + 号以编辑代码。">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        Queue jobs = this.commandRunner.getQueuedCommands();
        if(jobs.size()==0){
            response.getWriter().print("No queued job.");
        }
        Iterator it = jobs.iterator();
        while(it.hasNext()){
            Command script = (Command)it.next();
            response.getWriter().print(script.getCmd());
            response.getWriter().print("<br>");
        }
        
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
